Stoker-bridge.



P. L. CROWE. STOKER BRIDGE APPLICATION FILED AUGJ. 1914.

Patented Apr. 16, 1918.

PAUL L.'CROWE, OF NEW YORK, N. Y. I

STOKER-BRIDGE.

Specification of Letters Patent. Patented Apr. 16, 1918.

Application filed August 5, 1914. Serial No. 855,105. 1

To all whom it may concern:

Be it known that I, PAUL L. CRowE, citizen of the United States, and resident of New York, in the county of Bronx and State of New York, have invented certain new and useful Improvements in Stoker-Bridges, of which the following is a specification.

This invention relates to improvements in stoker bridges of that class which are mounted for adjustment as circumstances may require, and it has for its objects, among others, to provide an improved stoker bridge which shall serve as a stop or abutment for the rearwardly-moving mass of fire and ashes carried by the moving grate, and so constructed as to withstand the intense heat to which it is subjected.

Other objects and advantages of the invention will hereinafter appear and the novel features thereof will be particularly pointed out in the appended claim.

The invention is clearly illustrated in the accompanying drawings, which, with the numerals of reference marked thereon, form a part of this specification, and in which- Figure 1 is an end elevation showing the application of my improved bridge.

Fig. 2 is an enlarged vertical cross section of the bridge.

Fig. 3 is a similar view showing a modified form of bridge.

Fig. 4 is a vertical longitudinal section through the form of bridge shown in Fig. 2.

Like numerals of reference indicate like parts throughout the different views.

Referring to the drawings, 2 designates the bridge which is a box-like structure or metallic frame 4 divided by vertical partitions or webs 6 into a multiplicity of cells or water-tight compartments, adapted to receive water, when water is used, or firebrick, if the latter are used, the said compartments, in the latter case, being of a size to just receive the fire-brick 7, as seen in Figs. 2 and 4. When not designed to receive fire-brick, the lower front edge of the frame 4 is rounded, as seen at 21 in Fig. 3. When fire-brick are used, the lower front edges thereof should be likewise rounded, as seen at 21 in Fig. 2. A bridge thus constructed will not warp under the extreme conditions of furnace heat, and the rounded edge facilitates the passage of the ashes.

It will be noted that the bridge wall in Fig. 8 is a closed compartment adapted to receive a liquid, while the form shown in Fig. 2 is open at one end adapted to receive a brick, which latter, however, may he saturated by water admitted through the hole 20.

. The bridge is disposed transversely of the endless moving stoker or endless apron or traveling grate and is supported at the inner end thereof on supports 8, by means of trunnions 9 in bearings 10, at the ends of the bridge, as seen best in Fig. 4, so that it i may be tilted to elevate the forward edge thereof, as shown by dotted lines in Fig. 1. The bridge may be tilted by means of a bar 15 pivotally connected to the rocking member 15", one end of which is inserted through a recess 18 in the frame 4 and there held by a set screw 19, as seen in Fig. 4. The bridge may be held in its adjusted position by the engagement of a tooth with one of the notches 16 at the furnace front, as seen in Fig. 1.

In the form seen in Fig. 3, the cells communicate each with its neighbor through the holes 20 in the partitions 6and supplied with water from any suitable source, and entering one cell or compartment, and thence into the next, and so on.

The bridge wall is mounted for ease of movement to permit the ashes to pass between the bridge and stoker grate or apron, and the travel of the grate is so timed that the coal will be reduced to ashes at or before the time of reaching the bridge and to fall into the ash-pit by passing beneath the bridge. By means of the adjustment provided, the bridge may be adjusted to a greater or less angle so that the opening for the escape of the ashes may be regulated in accordance with the kind or quality of fuel used.

What is claimed as new is A traveling stoker, a bridge disposed transversely of the same at one end thereof, trunnions mounted in bearings at opposite ends of said bridge, a rocking member having one end passed through a slot n the rear end of said bridge and adapted to im- Signed at New York city, in the county part motion thereto, and having a dependof New York and State of New York this ing portion and a bar pivotally connected 31st day of July A. D. 1914.

with the depending portion of mid rocking PAUL L. CROWE. member for tilting the bridge on its trnniVitneeses:

nions, the lower front edge of said bridge CHARLES F. Roo'r,

being rounded rearwardly. N. HELLER.

Copies of this patent may be obtained for i i v.e ,qfil f' sqqagh, by addressing the Commissioner of Patents, Washington, D. 0. 

